#include <stdio.h>
int main(void)
{
    printf("the int size is %lu bytes\n", sizeof(int)); // the int size is 4 bytes
    int i = 2147483647;
    printf("%d %d %d\n", i, i + 1, i + 2); // 2147483647 -2147483648 -2147483647

    printf("the float size if %lu bytes\n", sizeof(float)); // the float size if 4 bytes
    float toobig = 3.4E38 * 100.0f;
    printf("%e \n", toobig); // inf

    float toosmall = 0.123456789E-10 / 10.0f;
    printf("%e \n", toosmall); // 1.234568e-12        小数点后保证6位

    return 0;
}